Deep-freezing apparatus, particularly for food products, with high efficiency of heat exchange between the cryogenic gas and the products to be frozen

摘要

A deep-freezing apparatus, particularly for food products, with high efficiency in the exchange of heat between the cryogenic gas and the products to be frozen, comprising a tunnel-like structure (2) that forms internally a deep-freezing chamber (3) that is provided with an inlet (4) and with an outlet (5), a conveyor (6) for the products to be deep-frozen which runs from the inlet (4) to the outlet (5) and forms a surface for supporting and moving the products (20) to be frozen along an advancement direction (7); in the deep-freezing chamber (3) there are main dispenser elements (8) and elements for distributing a cryogenic gas; the elements for distributing cryogenic gas comprise at least one fan (9, 10) that is provided with a dispensing outlet (11, 12) that is arranged above the conveyor (6) and is suitable to dispense a jet of gas that is orientated substantially at right angles to the surface for supporting and moving the products (20).